CONCLUSION AND RECOMMENDATION IMPROVING DUST CLEANING SYSTEM TO DECREASE DUST LEVEL IN THE AIR AT THE SPINNING WORK CENTER IN PT KUSUMAPUTRA SANTOSA.

CHAPTER 7

CONCLUSION AND RECOMMENDATION

7.1. Conclusion

There are problems at spinning work center. The air around ring frame machine is dusty and that causes the surfaces of yarn produced by this machine defected (not aligned). The defect product must be cut at the finishing work center; this prolongs production processes, creating a bottleneck at this work center. Therefore, the real production does not reach the production target (late of production) that causes profit loss. The root problem is the dust cleaner machine cannot absorb dust optimally, because lack of hole at exhaust arm.

Based on those problems, this research propose a design improvement of dust cleaner machine by adding an appropriate number of exhaust systems, to maximize the ability of absorbing the dust in order to help PT. Kusumaputra Santosa clean the air condition in the spinning work center.

The improvements of dust cleaner machine by add ten holes at exhaust arm can maximize the ability of absorbing dust around spinning work center at PT Kusumaputra Santosa. This statement proved after long experiment. List below will show you about the decline of dust level in the air.

1. The dust level at Ring Spinnig 1 decrease from 1.00 mg/m3 to 0.7 mg/m3 2. The dust level at Ring Spinnig 2 decrease from 1.33 mg/m3 to 0.7 mg/m3 3. The dust level at Ring Spinnig 3 decrease from 0.66 mg/m3 to 0.33 mg/m3 4. The dust level at Ring Spinnig 4 decrease from 0.66 mg/m3 _{to 0.33 mg/m}3

Applying new design of dust cleaner machine can clean up the air at spinning work center. Then because of that, the root of the problem as explained in the background can be solved one by one. Clean air increases the quality of yarn, so the defect product can be reduced. This can be seen from the number of cut and joint yarn at finishing work center, from the average of 10.3 decrease to 7.8, so the level of bottleneck can be reduced and production process can be fast.

7.2. Recommendation

Based on three data above can be conclude that new design of dust cleaner machine works as desired, so the company can apply it to maximize production process.

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Appendix 1

Appendix 1

Appendix 3